An employee, wearing a protective face mask, sprays disinfectant on a shelf with shoes on display inside the department store Le Printemps Haussmann in Paris as France eases gradually its lockdown measures and restrictions following the outbreak of the coronavirus disease (COVID-19) in France, May 28, 2020. REUTERS/Gonzalo Fuentes

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May 21, 2020

The school bell and books are seen on a shelf as preparations are made for Watlington Primary School...

The school bell and books are seen on a shelf as preparations are made for Watlington Primary School to reopen to children on June 1, following the outbreak of the coronavirus disease (COVID-19), Watlington, Britain, May 21, 2020. REUTERS/Eddie Keogh

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May 21, 2020

Tins of pencils are seen on a shelf as preparations are made for Watlington Primary School to reopen...

Tins of pencils are seen on a shelf as preparations are made for Watlington Primary School to reopen to children on June 1, following the outbreak of the coronavirus disease (COVID-19), Watlington, Britain, May 21, 2020. REUTERS/Eddie Keogh

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May 21, 2020

Face masks are displayed on a shelf before an exhibition at the National Museum amid the coronavirus...

Face masks are displayed on a shelf before an exhibition at the National Museum amid the coronavirus disease (COVID-19) outbreak in Prague, Czech Republic, May 21, 2020. The sign reads: "We stick together". REUTERS/David W Cerny

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May 21, 2020

An infrared thermometer, sanitizer and a poster encouraging people to wear masks are seen kept on a shelf...

An infrared thermometer, sanitizer and a poster encouraging people to wear masks are seen kept on a shelf of a store which opened after some restrictions were lifted, during an extended lockdown to slow the spread of the coronavirus disease (COVID-19) in New Delhi, India, May 21, 2020. REUTERS/Anushree Fadnavis

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May 13, 2020

An employee adjusts bottles on the shelf at a shop specialising in organic food and natural products...

France softens lockdown rules during the outbreak of the coronavirus disease (COVID-19)

A shelf with books and games which could not be used by children is protected by tape in a classroom in a private school on the eve ot its reopening in Saint-Sebastien-sur-Loire near Nantes as France softens its strict lockdown rules during the outbreak of the coronavirus disease (COVID-19) in France, May 11, 2020. REUTERS/Stephane Mahe

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April 29, 2020

A shelf at a Kroger-owned Ralphs store is stocked with toilet paper in Los Angeles, California, U.S.,...

Toy figurines with face masks are placed on a shelf at the Efko-karton company as the spread of coronavirus disease (COVID-19) continues in Nove Veseli, Czech Republic, April 14, 2020. REUTERS/David W Cerny

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April 11, 2020

Signs are seen on a shelf in Streatham as the spread of the coronavirus disease (COVID-19) continues,...

An almost empty shelf is seen at a supermarket during a countrywide lockdown to prevent the spread of...

An almost empty shelf is seen at a supermarket during a countrywide lockdown to prevent the spread of the coronavirus disease (COVID-19) in Zalka, Lebanon, April 7, 2020. Picture taken April 7, 2020. REUTERS/Mohamed Azakir

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April 06, 2020

Maria Araque, 90, looks for food on a shelf at her house during the nationwide quarantine due to the...

Maria Araque, 90, looks for food on a shelf at her house during the nationwide quarantine due to the coronavirus disease (COVID-19) outbreak in Caracas, Venezuela March 26, 2020. Picture taken March 26, 2020. REUTERS/Manaure Quintero

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March 31, 2020

An empty shelf where toilet paper would normally be stocked overlooks a nearly empty Pennsylvania Avenue...

An empty shelf where toilet paper would normally be stocked overlooks a nearly empty Pennsylvania Avenue...

An empty shelf where toilet paper would normally be stocked overlooks a nearly empty Pennsylvania Avenue in during the coronavirus outbreak in downtown Washington, U.S. March 31, 2020. REUTERS/Jonathan Ernst

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March 20, 2020

A man pushes a cart in a supermarket with empty space on the shelf in Abuja, Nigeria March 20, 2020....

A woman looks at an empty shelf with a sign announcing the rationing of toilet paper at a Rewe grocery...

A woman looks at an empty shelf with a sign announcing the rationing of toilet paper to one pack per person at a Rewe grocery store in Potsdam, Germany, March 20, 2020, as the spread of the coronavirus disease (COVID-19) continues. REUTERS/Michele Tantussi

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March 19, 2020

Hand sanitizer sits on a shelf as men pray at the Muslim Association of Puget Sound amid the coronavirus...

A woman picks up some pasta from nearly empty shelf at a Super U supermarket as people began stockpiling...

A woman picks up some pasta from nearly empty shelf at a Super U supermarket as people began stockpiling food in Paris, as France grapples with an outbreak of coronavirus disease (COVID-19), March 14, 2020. REUTERS/Benoit Tessier

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March 14, 2020

A near empty meat shelf is seen several minutes after the morning opening at a BJ's Wholesale Club market...

A near empty meat shelf is seen several minutes after the morning opening at a BJ's Wholesale Club market...

A near empty meat shelf is seen several minutes after the morning opening at a BJ's Wholesale Club market at the Palisades Center shopping mall during the coronavirus outbreak in West Nyack, New York, U.S., March 14, 2020. REUTERS/Mike Segar

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March 14, 2020

A shelf with soap and body wash is seen in a shop in Vienna, Austria March 14, 2020. REUTERS/Lisi Niesner...

People gather supplies at a grocery store amid coronavirus fears spreading in Toronto

People wait as an employee restocks a shelf with disinfectant wipes as people shop at a Walmart Supercentre amid coronavirus fears spreading in Toronto, Ontario, Canada March 13, 2020. REUTERS/Carlos Osorio

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March 13, 2020

Bottles of hand sanitizers are seen in a shelf for sale, amid coronavirus outbreak, at a medical store...

A sign informing customers about a restriction on the number of allowed packets of toilet roll is seen...

A sign informing customers about a restriction on the number of allowed packets of toilet roll is seen on a shelf inside a Morrisons supermarket in Liverpool,Britain, March 11, 2020 . REUTERS/Phil Noble

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March 11, 2020

A sign informing customers about a restriction on the number of allowed handwash dispensers is seen on...

A sign informing customers about a restriction on the number of allowed handwash dispensers is seen on...

A sign informing customers about a restriction on the number of allowed handwash dispensers is seen on an empty shelf inside a Morrisons supermarket in Liverpool,Britain, March 11, 2020 . REUTERS/Phil Noble

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March 09, 2020

A supermarket shelf with canned lentil and pea stew is seen partly empty and not yet refilled on Monday,...

A supermarket shelf with canned lentil and pea stew is seen partly empty and not yet refilled on Monday,...

A supermarket shelf with canned lentil and pea stew is seen partly empty and not yet refilled on Monday, following panic buying over the weekend due to the coronavirus (COVID-19), in Bad Honnef near Bonn, Germany March 9, 2020. REUTERS/Wolfgang Rattay

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March 09, 2020

A super-market shelf with canned lentil and pea stew is partly empty and not yet refilled on Monday following...

Empty super-market shelfs due to coronavirus (COVID-19) related panic buys over the weekend in Bad Honnef...

A super-market shelf with canned lentil and pea stew is partly empty and not yet refilled on Monday following panic buyings over the weekend due to the coronavirus (COVID-19) disease in Bad Honnef near Bonn, March 9, 2020. REUTERS/Wolfgang Rattay

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March 09, 2020

A super-market shelf with canned lentil and pea stew is partly empty and not yet refilled on Monday following...

Empty super-market shelfs due to coronavirus (COVID-19) related panic buys over the weekend in Bad Honnef...

A super-market shelf with canned lentil and pea stew is partly empty and not yet refilled on Monday following panic buyings over the weekend due to the coronavirus (COVID-19) disease in Bad Honnef near Bonn, March 9, 2020. REUTERS/Wolfgang Rattay

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March 09, 2020

A lonely bottle with germ oil is pictured in a supermarket shelf that has not been refilled yet on Monday...

Empty supermarket shelfs due to coronavirus (COVID-19) related panic buys over the weekend in Bad Honnef...

A lonely bottle with germ oil is pictured in a supermarket shelf that has not been refilled yet on Monday due to coronavirus (COVID-19) related panic buyings over the weekend in Bad Honnef near Bonn, Germany March 9, 2020. REUTERS/Wolfgang Rattay

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March 09, 2020

A supermarket shelf with organic products such as noodles, floor and sieved tomatoes is partly empty...

Empty supermarket shelfs due to coronavirus-related panic buys over the weekend in Bad Honnef

A supermarket shelf with organic products such as noodles, floor and sieved tomatoes is partly empty and not yet refilled on Monday due to coronavirus-related panic buyings over the weekend in Bad Honnef near Bonn, Germany March 9, 2020. REUTERS/Wolfgang Rattay

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March 09, 2020

A supermarket shelf with organic products such as noodles, floor and sieved tomatoes is partly empty...

Empty supermarket shelfs due to COVID-19 related panic buys over the weekend in Bad Honnef

A supermarket shelf with organic products such as noodles, floor and sieved tomatoes is partly empty and not yet refilled on Monday due to coronavirus-related panic buyings over the weekend in Bad Honnef near Bonn, Germany March 9, 2020. REUTERS/Wolfgang Rattay

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March 09, 2020

A supermarket shelf with canned lentil and pea stew is partly empty and not yet refilled on Monday following...

Empty super-market shelfs due to coronavirus (COVID-19) related to panic buys over the weekend in Bad...

A supermarket shelf with canned lentil and pea stew is partly empty and not yet refilled on Monday following panic buyings over the weekend due to the coronavirus (COVID-19) disease in Bad Honnef near Bonn, Germany March 9, 2020. REUTERS/Wolfgang Rattay

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March 09, 2020

Signage advising customers about shortages of hand wash is seen on a shelf inside a Tesco supermarket...

Box of Vitamin C supplements sits on a nearly empty pharmacy shelf in advance of a potential novel coronavirus...

A box of Vitamin C supplements sits on a nearly empty pharmacy shelf in advance of a potential novel coronavirus outbreak arriving in the Manhattan borough of New York City, New York, U.S., February 28, 2020. REUTERS/Carlo Allegri

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February 28, 2020

A pharmacy displays a shelf, empty of masks, in advance of a potential novel coronavirus outbreak arriving...

Pharmacy displays a shelf, empty of masks, in advance of a potential novel coronavirus outbreak arriving...

A pharmacy displays a shelf, empty of masks, in advance of a potential novel coronavirus outbreak arriving in the Manhattan borough of New York City, New York, U.S., February 28, 2020. REUTERS/Carlo Allegri

Kristen Curley, owner of Nitro-Pak, grabs some rubber protective gloves as dust & particle mask sit on a shelf that will be part of personal protection and survival equipment kits ordered by customers preparing against novel coronavirus, at Nitro-Pak in Midway, Utah, U.S. February 27, 2020. REUTERS/George Frey REFILE - CORRECTING COMPANY NAME SPELLING

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February 27, 2020

Kristen Curley, owner of Nitro-Pak, puts a backpack on a shelf to be sold as one of the personal protection...

Kristen Curley, owner of Nitro-Pak, puts a backpack on a shelf to be sold as one of the personal protection...

Kristen Curley, owner of Nitro-Pak, puts a backpack on a shelf to be sold as one of the personal protection and survival equipment kits ordered by customers preparing against novel coronavirus, at Nitro-Pak in Midway, Utah, U.S. February 27, 2020. REUTERS/George Frey REFILE - CORRECTING COMPANY NAME SPELLING

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February 27, 2020

Freeze dried food sits on a shelf as an employee gathers items for personal protection and survival equipment...

Freeze dried food sits on a shelf as an employee gathers items for personal protection and survival equipment...

Freeze dried food sits on a shelf as an employee gathers items for personal protection and survival equipment kits ordered by customers preparing against novel coronavirus, at Nitro-Pak in Midway, Utah, U.S. February 27, 2020. REUTERS/George Frey

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February 25, 2020

An employee walks along a shelf of car body parts of the new electric Volkswagen model ID.3 in Zwickau,...